Motor



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' 'MOTOR.

APPLICATION FILED OCT. 23, 1920.

INVENTOR Patented Sept. 19, 1922.

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L val/L's Fealckara? A'I'I'ORNEY L REICHARD.

MOTOR.

APPLICATION FILED OCT. 23, 1920.

Pawnteoi Sept. 19, 119220 2 SHEETS-SHEET 2.

jj ef .ZJ ozw's Fee s/ 2 card INVENTOR ATTORNEY Patented Sept. 19, 11222.

STATES LOUIS REICHABD, F EAS'ION, PENNSYLVANIA.

Application filed October 23, 1920. Serial No. 418,977.

' To all whom it may concern:

'Be it known that I, Louis REICHARD, a citizen of Germany, residing at Easton, in the county of Northampton and State of Pennsylvania, have invented new and useful Improvements in Motors, of which the following is a specification.

his invention relates to internal combustion engines, and contemplates a construclo tion wherein two pistons of relative different size are used in each cylinder. the said pistons operating one within the other in a manner whereby a power stroke is produced upon each revolution of the crank shaft.

The nature and advantages of the invention will be better understood when the following detail description is read in connection with the accompanying drawings the invention residing in the combination, construction and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indicate the similar parts in the several views and wherein Figure 1 is a view in elevation of one of the cylinders partly in section.

Figure 2 is a transverse sectional view taken on line 2-2 of Figure 1.

Figure 3 is a similar view taken on line 3--3 of Figure 1.

Figure 4 is a sectional view showing the relative position of the pistons subsequent to the explosion of the -combustible mixture.

Figure 5 is a similar view showing the position of the pistons for the intake and exhaust of the fuel and burnt gases.

Figure 6 is a view showing the position of the piston on the compression stroke.

Figure 7 is a view showing the final position of the piston just prior to the firing of the explosive mixture.

Referring to the drawings in detail 10 indicates one 'of the c linders of the motor which is surrounded y the water jacket 11. The cylinder is closed at its upper end except for a centrally disposed opening 12 which establishes communication between the intake manifold 13 which of course communicates with the carburetor (not shown). An inwardly opening valve 14 controls the communication between the intake manifold 13 and the cylinder 10, this valve being normally maintained closed by means of the spring 15 surrounding the stem of the valve in the usual well-known manner. The cylinder 10 is of uniform diameter throughout the major portion of its length, being slightly offset as at 16 at its upper end to provide a pocket 17 for a purpose to be hereinafter described. The cylinder 10 and the water jacket 11 are provided with alined openings 18 at an appropriate point in their-length, and these openings receive a spark plug 19.

Operating within the cylinder 10 are relatively long and short pistons 20 and 21 respectively, the latter operating within the former and both connected to the crank shaft (not shown) by means of the connecting rods 22. These pistons operate simultaneously toward and away from each other. the piston 20 having inlet and exhaust openings 23 and 24 respectively at one side there of. The cylinder 10 is also provided with an exhaust opening 25 which establishes communication between the cylinder and the exhaust pipe 26. The pistons are equipped with suitable packing rings 27 as shown. The operation of the engine is as follows:

Assuming that a fresh charge of combustible mixture has been taken into cylinder 10 above the piston 20 in Figure 4,-

and that an explosion has taken place which moved the pistons 20 and 21 away from each other toward the opposite ends of the cylinder. During the continued movement of the pistons under these conditions, the piston 20 simultaneously assumes a position which brings the exhaust opening 2 thereof in registration with the exhaust opening 25 of the cylinder, and the inlet. opening 23 in communication with the pocket 17 formed in the upper end of the cylinder. It is thereby understood that upon movement of the pistons'in opposite directions and toward the ends of the cylinder, the large piston 20 compresses the charge of combustiblemixture between the upper end of this piston and the adjacent end of the cylinder, but when the large piston assumes the position just described and illustrated. in Figure 5, the charge of explosive mixture passes from the pocket 17 through the inlet opening 23 into the large piston 20 and as the mixture enters this cylinder under compression it forces the burnt gases within the piston through the exhaust opening 24 and 25 respectively. Now, when the pistons 20 and 21 move toward each other, the combustible mixture contained in the piston 20 is compressed by the respective pistons, and during this movement, a fresh charge of combustible mixture is drawn into the cylinder 10 above the piston 20, the valve 14 being opened by suc tion to admit the said fresh charge of mixture to enter the cylinder. Manifestly, as the pistons move away from each other the inlet opening 23 is moved into communication with the pocket 17, and the exhaust opening 24 disposed to communicate with the exhaust port 25 of the cylinder, such position of parts being illustrated in Figure 5. When the pistons are moved toward each other, the fuel confined within the larger piston 20 is eifectively compressed, and when the pis-.

tons have moved as close to each other as possible, the opening 23 is brought into aline with the opening in'the cylinder which accommodates the spark plug 19 at which time the explosion takes place to drive the pistons in opposite directions. By reason of the construction, a power stroke is produced with each revolution of the crank shaft.

While it is believed that from the foregoing description the nature and advantages of this invention will be readily apparent, I desire to have it understood that I do not limit myself to what is herein shown and described, and that such changes may be resorted to when desired as fall within the scope of what is claimed.

What I claim is In an internal combustion engine, a cylinder having an intake opening at the top thereof and an exhaust opening adjacent the lower end thereof, an intake manifold communicating with the inlet opening, an inwardly opening valve operating through the intake manifold and normally closing the intake opening, said cylinder being extended adjacent the upper ends thereof to provide a laterally disposed pocket, relatively long and short pistons arranged withinv the cylinder and operating one within the other, with the small piston sliding within the long piston, said long piston having an inlet opening and an exhaust opening adapted to simultaneously communicate with said pocket and the exhaust opening respectively of the cylinder when said pistons are moved to their limits away from each other, a water jacket surrounding the cylinder, said jacket and cylinder having an opening approximately midway of its length, a spark plug arranged in said opening, and said inlet opening of the long piston being adapted to be brought into aline with the spark plug on the final position of the piston, when said pistons are moved toward each other for the purpose specified.

In testlmony whereof I aflix my signature.

LOUIS REICHAR-D. 

